<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport"
	      content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
</head>
<body>
<input type="button" id="btn1" value="定位">
<script>
window.onload=function () {
  let oBtn = document.getElementById('btn1');
  oBtn.onclick=function () {
    navigator.geolocation.getCurrentPosition(function(res){
    	alert('成功'+res)
      },
	    function(err){
    	alert('失败');
      },{
    	enableHighAccuracy:true,    //高精度模式
	    timeout:5*1000,             //超时的时间
	    maximumAge:24*60*60         //缓存
      });
  }
}
</script>
</body>
</html>